Grease-gun



A.. J. DILLEY. GREASE GUN. APPLICATION FILED FEB-13 1919.

1,400,034. A 0 Patented m13, 1921.

UNITED* STATES" Yanziano J. DILLEY, 'or Mura, mcmaair..

I u cannes-GUN.

' Specific-at-ion' of Letters Patent. Y

L patented pag.13, 1921.

v Amnicatnm mea February 1a, 1919. serial in. 277,827.

To all 'whom it may concern." i

Be it known that I, ARz'ENo J. DILLEY, of Muir, in the count of Ionia,in-theState of Michigan, have lnvented new and useful Improvements inGreaseGuns, of which the l following, taken in connectionwiththefaccompanyin drawings, is a full, clear-, 'and exact descrlptron.

This invention -relatesfto certain improve-V a eating purposes, andparticularly as applied to the various bearings of-motor vehicles,l

is usually put upin cans A'or receptacles of convenient size fordelivery to the user, and One of the objects ofl my presentinvention isto provide a pump which may be easily and quickly attachedto-the outletof the can and used in connectionv therewith in lubricating bearings',thus permitting the Ypump to be used as-the relling mediumfortransferring the greasedirectlyrromthecan to the bearing, andavoiding the inconvenience of separate meansV for filling of the pump.

Another object is toenable the valve-which controls the inletand outletports 'to be operated at will by the piston operatinghandle at the endof each stroke of the-piston so that the communication between the inletand cylinder may be opened, and that be tween the outlet and cylinderclosed lat the end of the compression stroke, while -communlcationbetween the outlet and cylinder is opened, and that between the inletand cylinder is closed at the end of the suction stroke 'of the piston.l l

Other objects and uses relating to specific arts of the grease gun willbe 'brought out 1n the ollowlng description. v

" In the drawings- Figure -'1' is'a side elevation, partly in I.section, and partially broken away, of a lu- -bricating apparatus,showing the various l f/eatures of Vluy-invention.

Fig. -2- is an enlarged sectional view through the lower portion of thepump and Y valve case, showing more particularly the Y couplingconnection between the can and delivery pipe. Fig. 3

is an enlarged horizontal sec;

tional view taken Pl of `ig. is 'an enlarged transverse s e'ctional v1ewthrough the `:upper portionVVV of the pump cylinder taken the'plane ofline Figs. -f and side elevations' partially insection of the same pumpapplied in different ways to the exterior and interior ofagrease-containing'pail. y y In Flg. -1- is shown an ordinary Agreasecontalnmg can 1, arrangedn an inverted position and provided with anoutlet --2- for connection with 'a piston pump 3-. ofY the reciprocatorytypefthe base of the pump provided with anjL shaped plate '1-, havingoneV end secured thereto 'in' a substantially horizontal positionand itsother end deflected upwardly at '-4=to rform a rest for vthe can atavpoint some distance rom'the outlet v If Vdesired the `upper endof thepump cylinder may. be'provldedwith a tubular nipple 5- secured in 'anopening' inthe adjacent side of the can -'l-f to "connect the tinteriorof the pump -eylinder'with'the interior of the can above the greaseline, when'thecan 1s inverted,so thatV when the piston is elevated todraw the grease intothe bottom of the pump case a certain amount. ofairpressure wlll beexertd from the top `of the grease bodyto force thelatterdownwardly,

and thereby `assistiits passage into the pump. The pump comprises anupright cylinder -6-' anda reciprocatory piston movable therein', saidpiston beiuggprovided with a tubular' stem -8 '-,1extending-upwardlythrough a'gland"-'-;9.- onathe'upper end of the cylinder, and carrying;at -its external (ind a handle 10., shown more clearly'in i.-l. .v valvecase-.lle-'is removably secured by` screw threads -to fthe lwer end ofthe c linden-6F, and is provided withan uprightvalve chamber coaxiallyand commumcatingwithfsaid cylinder for receiving a rota case

cup-shapedvalve 'said valve ing also providedzwithdiametrically -at itsupwardjend and 'communicates with opposite mletf and outlet ports -14-'-15- leading from '-thegl valve chamber l with the ing and c osincommixnication. between said and the lnteriorof the valveand cylm er.

The valve 13% is provided with an upwardly projecting( stem 17preferably of angular cross section, shown in Figs. -3-' ani4hlooselyhfit in a corresponding s a e len wise -18- mythetulbularstegnti '-8, so that when either stem is rotated similar motionwillbe imparted to the other stem, as will be hereinafter morefully-explained.

The valve 13- is interposed between the lower end of thecylinder 6'- andbottom of the valve case 12-, and is thereby held against axial movementbut free to move rotarily about its axis.

The valve stem -17--extends upwardly aV suficient distance to maintainconnectlon with the tubular stem -8- in all positions and adjustments ofthe piston.` Y Y The passage 16- in the valve 13-,` is

\ of substantially the same area as that of either of the ports -14- or-15- so that when r red with one port the opposite side of t e valvewill close the other port.

Suitable couplings, consisting in this instance of elbows -19- and -20-,are provided for connecting the inlet -14- and outlet -15 to the outlet-2- of the can v--1`-, and to a deliverytube -21- respectively, saidVcouplings being removably secured from the valve case by screwV threads,

, shown in Fi -2, the coupling -19- being remova ly secured by a union22- The delivery tube -21, which is flexible, is detachably secured atone end to the coupling 20- by means of a clamp -23, and its other endis provided with a nozzle -24- for directing the discharged grease tothe' bearings to be lubricated, or to any other receiver7 the open endnozzle being normally closed by a--cap -25- through the medlum of aspring One of the bjects in making the couplings -19- and .-20-removable from the valve case is to permit the pump to be used inconnection with grease pails as -1--- in au upright position, as shownin Figs. -5- and For example Fig. the coupling -19- is removed and theinlet nipple is projected through an opening in one side of the pailnear the bottom and secured in place Y by a nut -27-.

In Fig.- -6- the pump is arranged' on the inside of the pail to restupon the bottom thereof, and its outlet nipple is passed through anopening in the adjacent side of l'ts 14rand -15- for openopening whichalso controls the angular movement of the valve .-13- simultaneouslywith the angular movement of the piston. Y

The operation is as follows Assuming that the piston is at the limit ofits downward movement, as shown in Fig. 2, and that it is desired todraw the grease from the can -1- into the interior of the valve 13- andpump case 6-',

then the operator will simply rotate the handle -10, which in turn willcause a similar rotation of the piston -7-, and valve -17- until thepassage -1'6 is registered with the inlet 14-. g y

The piston is then raised to draw the grease from the can lthrough theopen port -lland passage -16- into the interior ofthe valve and lowerend of the pump case until the piston reaches the limit of its lpwardmovement, whereupon the han le lO- is turned a-half revolution toregister the port -16- with'the outlet-15-, and close the inlet -14-, atwhich time the piston is forced downwardly to expel the greasepreviously drawn into the pump 'In order that the angular vmovement ofthe piston rod and valve may be limited to approximately a halfrevolution the piston rod and gland -9- are preferably angular in crosssection to estabhsh a turnin connection between them, so that when t erod voperated means for impartmg a reciprocal motion and angular motionaround the axis of the pump to the piston, a valve controllingthepassage of grease to and from the pump,

and means actuated'by the angular movement 125 of2thiiston, foroperating said valve.

operated means for imparting a reciprocal a grease gun, a piston pump,hand .of grease to and from the pum motion and rotary motion to thepiston, a valve controlling the passage of grease to and from the pump,and means actuated b the rotary movement of the piston -indepen ently otthe reciprocatory movement for operating said valve.

3. In a grease gun, a piston pump, hand operated means for imparting areciprocal motion and angular motion around the axis of thepump to thepiston, and including a hollow rod, a valve controlling the passage andprovided with a stem telescoping Wit in the hollow rod and splinedthereon to turn therewith for o erating the valve.

4. n a grease gun, a piston pump, a valve case having an inlet portandan exit port, a valve communicating with the piston chamber andhaving means for alternately opening andv closing each port, handoperated means for reciprocating the piston and for moving it about itsaxis independently of its reciprocatory movement, and means actuated bythe movement ofthe piston about its axis for o erating said valve.

5. n a grease gun, a piston pump, a valve case secured to the lower endof the pump cylinder and having its valve-chamber coaxial With saidcylinder and provided with radial inlet and exit ports, a lcup-shapedvalve turnable in said chamber and provided with a port-adapted toalternately register with the first namedv ports as the valve isrotated,fmeans for imparting independent reciprocatory and rotarymovements to the pis-l ton, and means actuated by the rotary movement ofthe piston for operating the valve. 6. A piston pump provided with ahandle turnable about the axis' of and relativelyto its cylinder, avalve case secured to the other end of the cylinder and provided with avalve.

chamber coaxial with the cylinder, said chamber having an inlet port andan exit port, a valve turnable in said case and controlling said ports,and means actuated by the turning of the handle for operating saidvalve.

7. 1n a grease gun the combination of a.

cylinder, a piston movable in the cylinder, a

valve case secured to the cylinder and provided with an inlet Iand anoutlet, a valve in said case controlling the inlet and outlet and meansextending through the cylinder and piston for operating the valve.

8. In combination with a grease container having an outlet, a pumphaving a base plate extending under and supportlng the container, saidpump having an inlet and an outlet, the inlet being connected to theoutlet' of the container, and a .delivery pipe con-I nected to theoutlet of the pump.

WM. H. DILLEY, WILL DENNIS.

